Sib for Sully

We're trying to come up with a name for Sullivan's brother or sister and are struggling to find something we like as much as Sully's name. Anyone have any fresh ideas?Here are some names we have tossed around.

Hollis is one of my favourites. I like the idea of Ollie as a nn, and unless you were going to use it exclusively (with Hollis just being the fn on birth certificate, official, etc.) then no I don't think it's too close to Sully.

For girls I like Fiona more than Amelie. While Fiona is on the rise, I don't think it's too popular and I doubt it will ever be as popular as Emma or Isabella.

I think Fiona goes well with the Celtic Sullivan but I think Amelie sounds better with your surname Tanner (FionaTanner is heavy on the n's). I like Hollis but it's a little matchy with Sullivan. Sorry to say but FoxTanner or DashTanner would sound like a cartoon characters. I would avoid word or occupations for first names. Here are some suggestions for siblings.